ID:15884 Output port "<name>" of WYSIWYG "<name>" has real fan-out. It is a buried port used for name preservation of buried registers and should not have real fan-out.

CAUSE: A buried port is connected to user logic instead of a dangling wire. A buried port is used for naming the buried registers and should not have real fan-out.

ACTION: Check the design and make sure the specified port does not have real fan-out.